Watch Sadisflix. Loknayak is a 2004 biographical film based on the life of Bharat Ratna Jayaprakash Narayan (JP).[1] It was directed by Prakash Jha in 2004.[2] Actor Chetan Pandit enacted the role of Jayaprakash Narayan and Tisca Chopra played role of Prabhavati Devi, wife of JP Narayan.